The Fairly OddParents: Timmy's Secret Wish! (2011)

Timmy Turner makes his millionth wish, which all of Fairy World has gathered to celebrate, but after reviewing his wishes, the Fairy Council finds that Timmy should be put on trial for being the "worst godchild ever." Wanda, Cosmo, and Poof try to prove that Timmy is not, until the truth comes out that Timmy has made a secret wish that no one can know about, not even his godfamily.